IETF Meeting 68 Next Week
Written by martyndavies on Mar 16, 2007 - 08:31 AM
Next week Prague will see a plague of uber-techies as the 68th IETF meeting comes to town. As Dan York writes on the VOIPSA site, this is a very important meeting for all those interested in secure VoIP, because the last three candidate protocols for secure key exchange will be discussed, namely DTLS-SRTP, MIKEY v2 and ZRTP.
Last year there were 12 or 13 different proposals on the table, but most have been argued out, and Phil Zimmermans ZRTP is the surprise of the pack, coming from nowhere to the end up in final three. It seems there is much to commend in-band negotiation of keys (i.e. not in the SIP signalling path but in the media stream), especially when you go beyond simple call setup and start to consider cases like call forking (used for example in conferencing and follow-me) and early media channel (e.g. listening for inband tones before the call is established).
VoIP is about to make a big step forward in terms of open connectivity between systems, and my money would be on ZRTP.
It's just one of those weeks next week, with VoIP for Business in London, Spring VON in San Jose and IETF 68 in Prague. Sadly, I am visiting customers and will miss all three.
Last year there were 12 or 13 different proposals on the table, but most have been argued out, and Phil Zimmermans ZRTP is the surprise of the pack, coming from nowhere to the end up in final three. It seems there is much to commend in-band negotiation of keys (i.e. not in the SIP signalling path but in the media stream), especially when you go beyond simple call setup and start to consider cases like call forking (used for example in conferencing and follow-me) and early media channel (e.g. listening for inband tones before the call is established).
VoIP is about to make a big step forward in terms of open connectivity between systems, and my money would be on ZRTP.
It's just one of those weeks next week, with VoIP for Business in London, Spring VON in San Jose and IETF 68 in Prague. Sadly, I am visiting customers and will miss all three.
Reply from dean on Mar 16, 2007 - 12:38 PM
Incidentally, I note that ZRTP is now supported by TwinklePhone, which is a very nice (free and open-source) Linux based softphone:-
http://www.twinklephone.com/
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